Many of the colorants sound good, but there is an important issue regarding coloring of cosmetic products. The problem is that the FDA rules on colorants restrict your choices. FDA has a list of colorants which are
acceptable for use in cosmetic products. http://www.cfsan. fda.gov/~dms/cos-col.html provides a summary of the FDA rules on color additives. If a material is added with the sole intent of modifying the color of the product, then the colorant must come from the
FDA’s list of acceptable colorants. FDA considers products which are colored with unapproved colorant to be contaminated and will require withdrawal of the product from the market

However intensely colored materials which also convey other properties may added to change the color of the product. Since the color shift is a secondary artifact of the addition, this approach is acceptable.

Both fixed oils and essential oils can be intensely color and will change the color of your product. German Chamomile makes a very pretty robin’s egg blue, but it also has great therapeutic value. Thus it can be used to color products because it is generally added for to enhance the properties of the formula rather than color it. Similarly the addition of green hemp seed oil is an acceptable method of coloring a product since it was added for its essential fatty acid content. Alfalfa may be acceptable in soap as colored scrubby texture additive, but a “scrubby” lotion probably would not pass muster.

Chlorophyll has no therapeutic value and serves no other purpose than as a colorant. Since chlorophyll does not appear on the FDA colorant list, it may not be used in cosmetic products as a colorant.
http://www.cfsan. fda.gov/~dms/opa-col2.html has links to the list of acceptable colorants for various products. Many of these acceptable colorants are natural materials.

But, there could be an additional issue with the methylene blue. Since it has physiological activity and has been used as a drug, its use in formulas propels you into the land of drugs. Even over the counter drugs are heavily regulated by FDA. Unlike soaps and cosmetics which can be made anywhere, OTC drugs must be made in a registered Pharma facility in full compliance with GMP rules. See http://en.wikipedia
.org/wiki/Methylene_blue for more info on its applications and properties.

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